Made up a batch of soil today. I started out with 7.5 gallons of peat moss, 4.5 gallons of perlite, and 3 gallons of fresh EWC. To this I added 2.5 cups of dolomite lime. I set aside a couple gallons of this base mix for seedlings. Then added 2 cups bone meal and 1 cup blood meal, kelp, and greensand. Finally, I wet it down with two gallons of water with fulvic acid and reetha glycerine.

Speaking of pH, I went to calibrate my Blulab pen and the 7.0 calibration succeeded, but the 4.0 calibration said “err”. I keep the sponge wet with storage solution. Maybe I need to clean it? The dang thing is only nine months old

Place the pen with enough fresh KCL calibration/storage solution in a small cup to fully engulf the glass for ~24hrs or so. But, before that, cleaning the bulb doesn't hurt. I usually use wetted q-tips to remove any gunk / film from the bulb and the junction. The KCL solution should "measure" around 4, FWIW.

Place the pen with enough fresh KCL calibration/storage solution in a small cup to fully engulf the glass for ~24hrs or so. But, before that, cleaning the bulb doesn't hurt. I usually use wetted q-tips to remove any gunk / film from the bulb and the junction. The KCL solution should "measure" around 4, FWIW.